Metal window construction.



A. FRGMHOLD. METAL wlNDow cowsmucloN.

APPLICATION FILED 0CT. 2, 1915- 7u 1 Gu 1 o0, 1 .tm p wm d nu t n nu t aD1 l l EVS i 7 TT s'rsrns Para ALEXANDER FROMHOLD, ,0F RUTHERFORD, NEWJERSEY, ASSIGNOR TO S. H. POMEROY COMPANY, OF NEW YORK, N. Y., ACORPORATION OF NEW YORK.

METAL WINDOITA CONSTRUCTION.

Specication of Letters Patent. `I )jnftented Sept. I8, 19T?.

Original application filed January 28, 1i15, Serial No5/1,816. Dividedand this application filed October 2,

' 1915. Serial No.153,676.

To all whom it may concern:

Be it known that I, ALEXANDER FROM- HoLD, a citizen of the UnitedStates, and a resident of Rutherford, in' the county of Bergen, in theState of Newv Jersey, have invented certain new and useful Improvementsin Metal Window Construction, of

.which the following is a specification, reference being had to theaccompanying drawin s, forming a part hereof. y

his application is a divisional case of an application Ser. No. 4816filed by the present applicant on January 28, 1915, and relatesgenerally to hollow metal window construction. In the copending casethere were claimed certain features relatingmore particularly to theconstruction of the frame members of metal windows, and by the presentcase it is soughtto cover an improved muntin bar which shallbeespeciallyuseful in connection with windows of the generalG character shown in thecase above identified but, as will appear, is not to be limited to neras to insure a strong and durable construction and give reinforcement tothe entire window structure. The invention will be more fully explainedhereinafter with reference to the accompanying drawings in which it isillustrated and in which- Figure .Lis a view in elevation of a windowframe with upper and lower sashes in the construction of which thepresent improvements may be embodied.

Fig. 2 is a detail View showing a muntin bar embodying the improvements.

Fig. 3 is a view in section on the plane indicated by the line 3-3 ofFig. 2 and looking in the direction of the arrows.

Fig. 4 is a view in section on the plane indicated by the broken line L14: of Fig. 2 and looking in the direction of the arrows.

It will be obvious that vthe present im- .p.; povements are capable ofapplication to windows of different constructions and in fact toanalogous structures other than windows and in the presentrspecification and drawings it has been sought to describe andillustrate only such embodiments of the invention as will suffice for aclear understanding thereof.

In Fg. 1 of the drawings is shown a Vwindow of ordinary construction,compristo be formed in open construction, the strip r of vmetal which isbent to form the rail having its outer edges unconnected as by a web asis necessary when sheet metal of the lighter gage commonly employed isused. Furthermore, the heavier metal employed has such a substantialdegree of thickness as compared with the lighter metal commonlyemployed, -as to permit the corresponding flanges of the two members ofa joint to be interlocked in a common plane. This construction isespecially adapted for the use of the improved muntin bar and lendsitself admirably to the securing of this muntin bar ixedly to the rails.At the points where a muntin bar is to be secured to the rails, eachrail d, e, is slotted as at dx, ex, preferably through the edge of themolding d and c of the respective rails, to receive one arm g" of anL-shaped connecting piece g, the other arm g2 of which bears on thecorresponding fiat step or web d2, e2, of the respective rails. The endof the muntin bar f is suitably cut to fit the corresponding rail andthe extended arm g is entered within the muntin bar, bearing against theinternal flanges f', the arm of each connecting piece g', at the top andbottomends of the muntin bar j being. provided with threaded holes g3.Screws it are then inserted through opposite faces of the muntin bar,adjacent the top and the bottom thereof, to engage the threaded holesg3, respectively, in the arms 'g'. This construction not only serves torails d and e, and reinforcing effectively the entire sash. The muntinbar f is a. tension member and must be locked to the rails d and e if itis to serve this function. The. l.- shaped connecting piece ,beingconnected directly to the rails d and e and to the muntin bar serves totransfer all tension directly from the muntin bar to the rails.. Forthis reason the L-vshaped connecting piece must be secured fixedly tothe rails. At the same time, the devices for maintaining the muntin barin position are inexpensive and Y simple and greatly facilitate theassembling 1. In metal Window construction, a rail ,v

having a slot in its inner face, amuntin bar having its end fitted totherail, an' L-shapedl connecting piece having one arm bearinginternally against the rail and the yother arm projected through theslot in the rail di rectly, 'and means to secure said last named` arm tothe muntin bar whereby tension on the muntin 'bar is transferreddirectly to the rail.

v 2. In metal window construction, a sheet metal rail bent to form innerand outer vflanges and an intermediate web and slotted through its innerface, a muntin .bar having its end fitted to the rail, an L-shapedconnecting piece having one arm bearing internally against the web ofthe rail and the other arm projected through the slot in the rail, andmeans to secure said last named arm directly to the muntin bar wherebytension on the muntin bar is transferred di-y rectly to the rail.

3. In metal window construction, al rail formed of sheet metal withinner and outer flanges and an intermediate web and slotted in its innerface, a muntin bar formed of sheet metal with internal flanges, anL-shaped connecting piece having one arm bearing internally against thera1l and the other arm projected through the slot in the rail and Withinthe muntin bar and bearing against the internal flanges thereof, andmeans to secure the last named arm directly to the muntin bar wherebytension on the muntin bar is transferred directly to the rail.

4;. In metal Window construction, a rail formed of sheet metal withinner and outer iianges and an intermediate web and slotted in its innerface, a muntin bar formed of sheet metal With internal flanges, anL-shaped piece having one arm bearing internally against the rail andthe other arm projected through the slotrin the rail and within themuntin bar and bearing against the internal fianges thereof, and a screwprojected through one side of the muntin bar and threaded directly intothe corresponding arm of the connecting piece 4whereby'tension ."on themuntin bar-,is transferred di-- reotly to .the rail.

5. In metal window construction, a rail having a slot in its inner face,a muntn bar formed of sheet metal'in two parts with internal flanges. onone part, an L-Shaped connecting piece having one arm bearing internallyagainst the rail and' the other arm .projected-through the slot in therail within the muntin bar and bearing 'against said internal {ianges ofone member and` a screw passed through the other member and threadedinto said lastnamed arm whereby tension on themuntin bar is transferreddirectly to the rail.

This specification signed this rst day of4 October A. D., 1915.

ALEXANDER FROMHOLD.'

